How can I save my data from my DAQmx to a file with date and time?

[DiegoSV]

Hello everyone,

I have developed my VI in LabVIEW 8.6 to make temperature acquisition using my daq board USB-6221. Well, the VI is running alright but when I press the button to save a txt file it's launches a dialog box to choose the path to save the file, depending the time you have delayed to choose a path to create it the first data are saved with wrong date and time. I believe the temperature data are correct (I guess these data were storaged in the daq buffer and after I have clicked OK to save the file it is appended to this file), but the date and time doesn't change in this period. Look the example below.

I have looked some examples in here, but some VIs do the same thing. Is this a DAQ board configuration error?

 

Thank you.

 

Diego

[DiegoSV · Accepted solution]

Alright, I found one solution putting up a timer inside the loop. This timer avoid saving wrong data, but the first value after I've already pushed the save button is saved on txt file.

Thanks.

Diego 

[Himanshu_Goyal]

Hi

You can use TDMS file format to save the data. I have attached a reference Vi.

On button click you can log the data or remove the case structure and continuous log the complete acquisition data.

Thanks and Regards

Himanshu Goyal

[DiegoSV]

Hi Himanshu,

Could post your VI in the latest version (8.6)? Thank you.

Regards.

[Himanshu_Goyal]

Hi

Please find the attached older version VI.

[DiegoSV]

Thanks Hinamanshu. I´ve ran the VI here and have worked fine.

Sorry about the late response!